Version 5.0 brings a refreshed interface with clearer colour roles, subtle glass surfaces and updated menus. The FMS-style interface has a lighter appearance in Light mode and turquoise entries in Dark mode. Layouts adapt to both displays of iPhone Duo.

New: TAF for the selected airport • Tap the TAF label next to the approach name to see the latest TAF, with each change group (BECMG, TEMPO, FM, PROB) on its own line. • Included with Save & Retrieve Approach Data, together with the METAR. • The TAF is a forecast and is shown for reference only – unlike the METAR, it is never applied to the calculation. • The last TAF stays available offline; an expired TAF is marked. Snowfall intensity table • The notes below the table now follow the FAA Holdover Time Guidelines, Winter 2026–2027, word for word. • The last row now reads ≥3 ½ SM / ≥5600 m, as in the FAA table.

Corrected snowfall intensity estimate The snowfall intensity shown next to DAY/NIGHT in the de-/anti-icing panel (estimated from the METAR visibility) now follows the visibility ranges of the FAA table exactly. • Earlier versions applied each table row only up to its nominal visibility – for example the 800 m row up to 800 m instead of up to 1000 m. In some ranges the app therefore showed a lighter intensity than the FAA table, e.g. Moderate instead of Heavy at 500 m by day at -1 °C and below. • Visibilities reported in statute miles are now matched to the statute-mile column of the table. Reports such as 1/4 SM, 1/2 SM, 3/4 SM and 1 1/2 SM were affected. • Visibility reported as M1/4SM (less than 1/4 SM) is now recognized. Earlier versions showed no estimate for it. • The FAA table in the app (snowflake button) was correct and is unchanged, as are all holdover times. We recommend updating before winter operations.

Updated for the FAA Holdover Time Guidelines, Winter 2026–2027. • Holdover tables now show the FAA source document and issue date. • Snowfall intensity table updated to the 2026–2027 FAA edition. • New: search for a fluid by name in the fluid list. • Improved reliability of data synchronization when coming back online. • Fixed a rare crash on first launch.

• Various interface improvements and usability refinements

• Improved offline operation for more reliable use on the go • Better connectivity monitoring and smarter synchronization when the connection returns • Various interface improvements and usability refinements

Fixed an issue that, in some cases, prevented approaches from being saved to the database. Version 4 expands coolAltitude from a temperature correction calculator into a comprehensive cold-weather operations support tool for IFR pilots. New and improved features include: • Saved and reloadable approach presets for individual airports and procedures • Integrated METAR interaction with automatic propagation of relevant values • Full de-/anti-icing support based on FAA Holdover Time (HOT) Guidelines • Built-in HOT countdown timer to support situational awareness during ground operations • Structured storage and sharing of verified operational data • Improved workflow clarity and reduced data entry requirements This release focuses on accuracy, clarity, and usability during high-workload flight preparation.

This update includes an updated airport database and minor UI/UX refinements, with improved terminology for better operational clarity. Version 4 expands coolAltitude from a temperature correction calculator into a comprehensive cold-weather operations support tool for IFR pilots. New and improved features include: • Saved and reloadable approach presets for individual airports and procedures • Integrated METAR interaction with automatic propagation of relevant values • Full de-/anti-icing support based on FAA Holdover Time (HOT) Guidelines • Built-in HOT countdown timer to support situational awareness during ground operations • Structured storage and sharing of verified operational data • Improved workflow clarity and reduced data entry requirements This release focuses on accuracy, clarity, and usability during high-workload flight preparation.

This update includes a fix for sunrise and sunset calculations, along with minor user interface improvements. Version 4 expands coolAltitude from a temperature correction calculator into a comprehensive cold-weather operations support tool for IFR pilots. New and improved features include: • Saved and reloadable approach presets for individual airports and procedures • Integrated METAR interaction with automatic propagation of relevant values • Full de-/anti-icing support based on FAA Holdover Time (HOT) Guidelines • Built-in HOT countdown timer to support situational awareness during ground operations • Structured storage and sharing of verified operational data • Improved workflow clarity and reduced data entry requirements This release focuses on accuracy, clarity, and usability during high-workload flight preparation.

This update significantly expands coolAltitude from a temperature correction calculator into a comprehensive cold-weather operations support tool for IFR pilots. New and improved features include: • Saved and reloadable approach presets for individual airports and procedures • Integrated METAR interaction with automatic propagation of relevant values • Full de-/anti-icing support based on FAA Holdover Time (HOT) Guidelines • Built-in HOT countdown timer to support situational awareness during ground operations • Structured storage and sharing of verified operational data • Improved workflow clarity and reduced data entry requirements This release focuses on accuracy, clarity and usability during high-workload flight preparation.

This update significantly expands coolAltitude from a temperature correction calculator into a comprehensive cold-weather operations support tool for IFR pilots. New and improved features include: • Saved and reloadable approach presets for individual airports and procedures • Integrated METAR interaction with automatic propagation of relevant values • Full de-/anti-icing support based on FAA Holdover Time (HOT) Guidelines • Built-in HOT countdown timer to support situational awareness during ground operations • Structured storage and sharing of verified operational data • Improved workflow clarity and reduced data entry requirements This release focuses on accuracy, clarity and usability during high-workload flight preparation.

• Updated for iOS 26 • Minor UI and performance improvements

Improved readability and minor enhancements for a better user experience.

• Fixed an issue where the temperature display would reset to -5°C. • Optimised for iOS 18 for smoother performance.

coolAltitude has been completely reworked using the lates available technology. iPad versions now supports portrait and landscape orientations including split view over another app. Overall stability has been significantly improved. App now supports dark mode, which can be triggered regardless of the system settings to make night approaches more comfortable.

New features added: • RCAM table view • Different temperature correction calculation methods: o ICAO 8168 (current) o 10% | 20% of HAT (or QNH source) o 4% of HAT (or QNH source) on each 10°C of ISA DEV o Table values with linear interpolation • Option to use default rounding principles or to display precise values The look & feel was freshened and some bugs from previous version corrected.

IOS 13 compatibility.

iPhone X, XR, XS compatibility

Compatibility for IOS 11 Improved screen layout for different devices Added temperature corrections calculation up to +10°C Added support for higher temperatures (more than 22°C) – it calculates the “actual flown” descent path, which is higher than the selected one Added support for degrees of Fahrenheit

Modification of the height over the runway threshold used for profile calculation is enabled. Quick switch between profiles calculated to runway threshold and profiles calculated to runway touch down zone. This is useful feature for LOC/DME approaches as ILS DME is very often collocated with G/S antenna and thus reads zero at TDZ. Improved help guide

Compatibility for IOS 10

Minor improvements related to IOS 9

Improved formatting for long approaches. Now it can display readable results for approaches up to 22 nm long.

Now the coolAltitude is available on iPads and iPhones You can zoom in and out to different parts of the approach and corresponding values Fonts used for numbers are larger

coolAltitude can now calculate altitude corrections for MSA and Go Around altitudes.